EP 0229916 B1 19901024 - MAGNETIC BRUSH DEVELOPER
Title (en)
MAGNETIC BRUSH DEVELOPER
Publication
Application
Priority
US 81378385 A 19851227
Abstract (en)
[origin: US4679527A] A magnetic brush developer includes a magnetic brush roll having a magnet assembly which includes a development magnet, positioned at the nip between the magnetic brush roll and a photoconductive surface, at least one transport magnet and a pre-nip magnet arranged between the development magnet and the transport magnet adjacent the development magnet and so spaced from the transport magnet so as to create a tangential field therebetween. A mix barrier is arranged between the transport magnet and the pre-nip magnet to limit the flow of developer mix from a supply source to the developer nip. This combination enables the maintenance of stable flow rates and pressures of the developer mix at the development zone with non-critical tolerancing of the mix barrier.
IPC 1-7
IPC 8 full level
G03G 15/09 (2006.01)
CPC (source: EP US)
G03G 15/09 (2013.01 - EP US); G03G 15/0921 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 4679527 A 19870714; DE 3675183 D1 19901129; EP 0229916 A1 19870729; EP 0229916 B1 19901024; JP H0466510 B2 19921023; JP S62160474 A 19870716
DOCDB simple family (application)
US 81378385 A 19851227; DE 3675183 T 19861118; EP 86115996 A 19861118; JP 24222486 A 19861014